Niobium is a rare, soft, grey, ductile transition metal and ideally suited for creating delicate and fine jewellery. Niobium was discovered by the English chemist Charles Hatchett in 1801 and has been used to produce high-grade structural steel for many years. It is hypoallergenic and is frequently used in medical devices such as pacemakers. Austria produced a series of silver niobium euro coins starting in 2003.<br /> <br /> The Bohemian Chic collection represents the commitment Holly Yashi has made to protect the natural world and inspire others to look more closely at its beauty. Each jewelry piece is hand-crafted with semi-precious stones, European crystal and metals from a myriad of previous collections that Holly has carefully preserved for decades. Each piece in this jewelry collection of necklaces, bracelets and earrings offers its own individual character, as no two pieces are quite alike.